In what year was the album “Journey through the Decade - EP” released by Gackt?

In what year was the album “Journey through the Decade - EP” released by Gackt?: The album “Journey through the Decade - EP” was released in 2009 by Gackt, featuring 4 tracks.
What is the most successful song from the album “Journey through the Decade - EP” by Gackt?: “Journey Through The Decade” is the biggest hit from the album “Journey through the Decade - EP” by Gackt.

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